Homeowners often compare plastic to metal before making a decision. Since they are made from plastic or resin, these mailboxes resist rust and stand up to tough weather. You can wipe the surface clean with minimal effort, which makes maintenance simple. Many homeowners also choose plastic because it offers a clean look that supports strong curb appeal.
Here’s what plastic mailboxes offer:
O Weather resistance that helps prevent rust
O Low-maintenance surfaces that wipe clean easily
O Lightweight construction that simplifies installation
O Style variety to match different home exteriors
Manufacturers mold these mailboxes from durable polymer and resin materials built for outdoor use. You get reliable performance and a mailbox that maintains its appearance over time.
Post-Mount Plastic Mailbox
Most homeowners place post mount plastic mailboxes near the curb so carriers can deliver mail from the street. Place the mailbox where drivers can see it clearly from their vehicle. Visibility supports accurate delivery. Make sure the house numbers are easy to see on the door or side so carriers can quickly confirm the address.
Buyers select post-mount models when they want:
O Standard curbside placement at the front property line
O Easy vehicle-side carrier access
O A larger door surface for house numbers or personalization
Plastic Mailbox Sizes & Capacity
Think about how often you order online. If it is often, you will need more space than a basic letterbox can offer.
Use this quick guide:
OStandard: Holds letters and small envelopes
OLarge: Fits catalogs and small packages
OExtra-large or parcel: Handles frequent deliveries and boxed shipments
Standard Plastic Mailboxes
If your deliveries are mostly paper mail, there is no need for extra space. A regular size will work perfectly.
Large Plastic Mailboxes
Buyers who receive magazines, padded envelopes, or small parcels prefer large models. The added interior space helps prevent bending or overcrowding..
Extra-Large Plastic Mailboxes
Households that receive regular package deliveries select extra-large or parcel mailboxes. These models provide additional depth and height so carriers place small boxes securely inside.
Key Features to Compare Before You Buy
Not all plastic mailboxes function the same way. Review these details before you decide.
Security & Mail Protection
Plastic mailboxes use secure latches or tight-fitting doors to keep mail protected. Some models include locking options, while others focus on strong closures that reduce moisture exposure.
Check for:
O Secure door latching
O Weather-resistant construction
O Clear mailbox placement for easy address visibility
Place the mailbox where carriers can clearly see your house number on the home or post. Clear visibility helps prevent delivery errors.
Access Style
Access style affects daily convenience. Some models open from the front only. Others include rear access panels. Rear access helps homeowners retrieve mail without stepping into the street. Corner lots and higher-traffic roads benefit from that setup.
Style & Curb Appeal
Plastic mailboxes come in traditional rounded designs and modern rectangular profiles. Choose a color and finish that matches your exterior. Many homeowners pair the mailbox with a coordinating post or mounting kit for a clean, consistent look.
Care & Maintenance for Plastic Mailboxes
These mailboxes do not need much upkeep, though a quick inspection once in a while can extend their life.
Follow these steps:
O Wash surfaces with mild soap and water
O Tighten mounting screws if they loosen
O Replace worn numbers or flags when needed
A quick seasonal check prevents small issues from turning into larger problems.
Plastic mailboxes resist rust and corrosion. Metal models offer strength but may require more maintenance in wet climates. Homeowners who want lower upkeep often choose plastic.
Many homeowners install plastic mailboxes on existing posts if the mounting plate matches the new unit. Confirm compatibility before installation and secure the mailbox firmly.